CN1570381A - Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material - Google Patents
Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material Download PDFInfo
- Publication number
- CN1570381A CN1570381A CN 200410037378 CN200410037378A CN1570381A CN 1570381 A CN1570381 A CN 1570381A CN 200410037378 CN200410037378 CN 200410037378 CN 200410037378 A CN200410037378 A CN 200410037378A CN 1570381 A CN1570381 A CN 1570381A
- Authority
- CN
- China
- Prior art keywords
- actuator
- hydraulic pump
- oil hydraulic
- rare earth
- magnetostriction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Actuator (AREA)
Abstract
With the rare earth ultra magnetostriction material manufacture brake direct drive hydraulic pump, is suitable in the hydraulic system. The characteristic lies in, in front of the hydraulic pump cylinder body the end cover (8) after the brake outside case connection, causes the actuation partial brakes which should pump (J1) and the fluid pumps (J2) to make a body; The brake including by outside case (3), outside the end cover (2), sets to the brake cavity in vivo rare earth ultra magnetostriction material manufacture magnetostriction stick (7), the magnetostriction good beginnings and ends connection throwout lever (9) with the power transmission ball (10), leads the magnetism set (4), separates the magnetism set (6), namely nearby passable junction electric current helical tube (5); Actuates the piston (13) between inlays has exerts precompression butterfly shaped spring (14), on the brake establishes the bolt (1) adjusts precompression; When work distorts using the magnetostriction stick expansion and contraction through the throwout lever and the power transmission ball actuation piston. This invention may make forms a pair the actuating unit to actuate the double-acting, the single brake actuates the list function and the single brake actuates the double-acting three kind of structures, has responds quickly, the precision is high, may realize characteristic and so on numerical control.
Description
Technical field:
The present invention utilizes the big magnetostriction characteristic of rare earth ultra-magnetostriction material in magnetic field to make actuator, be the RE-GMM actuator, and directly drives oil hydraulic pump with this actuator.RE-GMM actuator among the present invention can be widely used in accurate Mechatronic control systems such as highi degree of accuracy valve, fuel injection valve, high precision displacement control.Be applicable to the seabed, in the hydraulic system of inferior maintenance inconvenience.
Background technique:
Known ferromagnetic material and ferrimagnetic material are owing to the change of magnetized state, and its length and volume all small variation will take place, and this phenomenon is called magnetostriction.TbFe
2, SmFe
2, DyFe
2, HoFe
2, TbDyFe
2Not only magnetostriction value of rare-earth-iron based compound height such as (terbium iron, samarium iron, dysprosium iron, holmium iron, terbium dysprosium ferrums), and curie temperature is higher than room temperature, and room temperature magnetostriction value is 1000～2500 * 10
-6, be traditional magnetostriction materials such as iron, nickel etc. 10～100 times, this class material is called as rare earth ultra-magnetostriction material (RearEarth Giant magnetostrictive materials is abbreviated as RE-GMM).Though people recognize the using value of this kind material at present, many fields are also fully developed.
And the driving oil hydraulic pump adopts common three-phase alternating-current motor usually, and complicated control mode is single but the main deficiency of this driving mode is a hydraulic pump structure, is not easy to realize digital control.
Summary of the invention:
The objective of the invention is directly to drive oil hydraulic pump with the actuator that rare earth ultra-magnetostriction material is made, actuator and oil hydraulic pump are made of one, and be simple in structure, and the reliability height overcomes deficiency of the prior art.
Technological scheme of the present invention such as Fig. 1-shown in Figure 2, the oil hydraulic pump that the actuator of making of rare earth ultra-magnetostriction material directly drives partly includes the oil hydraulic pump cylinder body, driven plunger 13 in the cylinder body, and Sealing 11; The oil hydraulic pump cylinder body is to be constituted by known technology by cylinder body front cover 8, rear end of the cylinder block lid 15 and cylinder body 12, the invention is characterized in, the oil hydraulic pump that the actuator of making of rare earth ultra-magnetostriction material directly drives is made up of actuator J1 and oil hydraulic pump J2 two-part, and the cylinder body front cover 8 of oil hydraulic pump is connected with the outer valve jacket of actuator J1 3 usefulness known technologies; Actuator partly includes the outer valve jacket 3 of actuator J1, the outer end cap 2 that is connected with outer valve jacket 3, the magnetostrictive rod 7 that is provided with in the actuator cavity, rare earth ultra-magnetostriction material is made, push rod 9 that magnetostrictive rod 7 two ends connect and the power transmission ball 10 that contacts with it, the concentrating flux sleeve 4 that is provided with near actuator J1 cavity inner wall forms magnetic loop, the magnetic shield 6 that is provided with between concentrating flux sleeve 4 and the magnetostrictive rod 7, and be provided with in the cavity between closed magnetic loop 4 and the magnetic shield 6, by known technology and outside realization solenoid 5 that be electrically connected, that can lead to alternating current; The end movement of magnetostrictive rod 7 and ouput force are by push rod 9 and power transmission ball 10 driven plunger 13.
The oil hydraulic pump that the described actuator of making of rare earth ultra-magnetostriction material directly drives, be embedded with the butterfly spring 14 that magnetostrictive rod 7 is applied precompression between rear end of the cylinder block lid 15 and driven plunger 13, actuator outer end cap 2 is provided with the bolt 1 of the adjusting precompression that connects by known technology.
The oil hydraulic pump that the described actuator of making of rare earth ultra-magnetostriction material directly drives, power transmission ball 10 is the conical surface with interior push rod 9 and contacted of oil hydraulic pump piston 13 end faces that are provided with of actuator cavity.
The oil hydraulic pump that the described actuator of making of rare earth ultra-magnetostriction material directly drives has adopted TbDyFe, i.e. the magnetostrictive rod 7 of Tb-Dy-Fe alloy bar material making; The magnetic shield 6 that has adopted teflon to make has adopted Ni50 material concentrating flux sleeve 4 and push rod 9.
The oil hydraulic pump that the described actuator of making of rare earth ultra-magnetostriction material directly drives, the cylinder body front cover 8 of actuator oil hydraulic pump is connected with the outer valve jacket of actuator J1 3 usefulness known technologies, rear end cover 15 is with after the outer valve jacket 3 usefulness known technologies of actuator J1 ' are connected, wherein actuator J1 outer end cap 2 is provided with the bolt 1 of the adjusting precompression that connects by known technology, makes the synthetic dual actuator of each actuator group that is connected of oil hydraulic pump J2 and its two ends drive the oil hydraulic pump of double acting structure.It is alternately flexible by two RE-GMM actuators that dual actuator drives, the driven plunger to-and-fro motion, and two cavity volumes output highly pressurised liquid can obtain elevated pressures and big flow.
RE-GMM actuator among the present invention is a kind of novel electricity-mechanical switching device.Its working principle is to utilize rare earth ultra-magnetostriction material (Rear Earth Giant magnetostrictive materials is abbreviated as RE-GMSM) terbium dysprosium ferrum (TbDyFe
2) big magnetostriction characteristic in magnetic field, obtain enough output displacement and ouput force, drive load.The RE-GMM actuator can replace force motor, torque motor, stepper motor, actuating motor, piezoelectric constant, the displacement and the power of output highi degree of accuracy, high response, high reliability, and can be directly and computer link realize digital controlly, be widely used in the accurate electromechanical control element and system of high precision displacement, power control.
Directly driving oil hydraulic pump with the RE-GMM actuator does not need displacement amplification and power to amplify, and has simplified pump structure, has expanded the application and the working method of pump, the present invention be applicable to the seabed, in the hydraulic system of inferior maintenance inconvenience.
Description of drawings:
Fig. 1 single actuator-driven press pump structural representation of the present invention
1, two work cavity volumes of bolt 2, outer end cap 3, outer valve jacket 4, concentrating flux sleeve 5, solenoid 6, magnetic shield 7, magnetostrictive rod 8, cylinder body front cover 9, push rod 10, power transmission ball 11, Sealing 12, cylinder body 13, piston 14, butterfly spring 15, rear end of the cylinder block lid J2, oil hydraulic pump J1, actuator V1, V2 reciprocating pump cylinder body;
Fig. 2 dual actuator of the present invention drive the double-action oil hydraulic pump structural representation J1, be connected with actuator J1 ', the actuator of regulating precompression bolt 1
Fig. 3 dual actuator of the present invention drives double-action oil hydraulic pump schematic representation, and internal structure as shown in Figure 2
Fig. 4 single actuator of the present invention drives double-action oil hydraulic pump schematic representation, and internal structure as shown in Figure 1
Fig. 5 single actuator of the present invention drives single-acting oil hydraulic pump schematic representation, and internal structure as shown in Figure 1
Embodiment:
The present invention 1-Fig. 2 in conjunction with the accompanying drawings adopts conventional machining technique to install.According to Fig. 1, the magnetostrictive rod 7 in the RE-GMM actuator uses material to be the TbDyFe alloy bar, i.e. the magnetostrictive rod of Tb-Dy-Fe alloy bar material making.TbDyFe rod energy density is big, electricity-machine coupling factor height, and ouput force is big, and deformation displacement is big, its magnetostrictivity λ
0Up to 1600 * 10
-6, be 30 times of traditional magnetostriction materials Ni, be 3～5 times of electrostriction material piezoelectric constant.TbDyFe alloy deformation displacement response is fast, is generally less than 1ms; Frequency response is wide, and stable output is arranged in the 1000Hz scope; The displacement of TbDyFe rod is exported accurately and reliably, and displacement accuracy is 10
-1μ m, the best can reach nanometer.Be used for actuator the TbDyFe material production be mechanical effect, be generally operational in and be lower than the 0.2KHz low-frequency range, if be connected with load, actual operating frequency is not higher than 50Hz, near TbDyFe material static characteristic, and the general work temperature should not be higher than 150 ℃.The actuator frequency of okperation is the low-frequency range of RE-GMM, when f=fr (during mechanical resonance frequency) TbDyFe has higher electromechanical coupling factor and constant response.Also can adopt TbFe among the present invention
2, SmFe
2, DyFe
2, HoFe
2Rare earth-iron based compounds such as (terbium iron, samarium iron, dysprosium iron, holmium iron) is made magnetostrictive rod 7.Alternating current produces alternating electromagnetic field by solenoid 5, and magnetostrictive rod 7 periodic fore and aft motion in magnetic field are by push rod 9 and power transmission ball 10 driven plunger 13.Butterfly spring 14 is used for magnetostrictive rod 7 is applied a precompression, is beneficial to improve its stretching rate and guarantees not bear moment of flexure, and precompression can be regulated by bolt 1.The magnetomotive force that the concentrating flux sleeve of being made up of high permeability material 4 can make electric current produce acts on magnetostrictive rod to greatest extent.Magnetic shield 6 existing separated magnetic effects can play certain protection, heat-blocking action to extension stem again.The extension stem both ends of the surface have higher parallelism, and transmit ouput force by the power transmission ball ball 10 and the conical surface, to guarantee the extension stem stress equilibrium, can freely stretch but not tension, bent.
RE-GMM actuator J1 is connected by high-intensity bolt with oil hydraulic pump J2 among the present invention.Pump J2 is a piston cylinder operator, and the end movement of RE-GMM rod and ouput force are by push rod 9 and power transmission ball driven plunger 13, and the reciprocating pump cylinder body has two work cavity volume V1, V2, can alternately realize inhaling, pressing oil.The RE-GMM actuator operating voltage that the present invention makes is low, only needs a few volt to tens volts.Maximum working voltage 60V of the present invention, electric current 2.5A, design output displacement 0.12mm, ouput force 150kN.POF is kVf (k-effect number wherein, double-action get 2, single-acting gets 1, and the V-one action is pressed oil volume, f-frequency of okperation).
The hydraulic pressure pump structure of dual actuator driving double acting structure of the present invention as shown in Figure 2.The two ends of actuator oil hydraulic pump respectively with actuator J1 with after actuator J1 ' employing known technology is connected, wherein actuator J1 is provided with the bolt 1 of the adjusting precompression that connects by known technology, makes the synthetic dual actuator of each actuator group that is connected of oil hydraulic pump J2 and its two ends drive the oil hydraulic pump of double acting structure.It is alternately flexible by two RE-GMM actuators that dual actuator drives, the driven plunger to-and-fro motion, and two cavity volumes output highly pressurised liquid can obtain elevated pressures and big flow.
High-strength material such as actuator outer end cap 2, pump cylinder 8,12,15 employings among the present invention; Pump cylinder is three body structures, connects with screw rod, and guarantees coupling stiffness.The invalid volume of cylinder body is very little, and equivalent volume Young's modulus height both can reduce the volumetric loss that causes because of distortion, can effectively improve the frequency of okperation of pump again.Sealing 11 can bear the high frequency to-and-fro motion, and frictional force is low, and the dead band of piston back-and-forth movement is little, and strict restriction internal leakage, guarantees to have enough working life.
The oil hydraulic pump that RE-GMM actuator of the present invention directly drives can be used as following several application mode and implements, and adopts as Fig. 2 and dual actuator driving double acting structure shown in Figure 3; As Fig. 1 and single actuator driving double acting structure shown in Figure 4; As Fig. 1 and three kinds of patterns of single actuator driving single-acting structure shown in Figure 5.The suction of these three kinds of pumps that scheme adopts is press-fitted flow point and is not realized by the valve group 16 in the known technology and 17.
The effect that several application modes of oil hydraulic pump that above RE-GMM actuator directly drives reach is described as follows: single actuator drives the oil hydraulic pump (see figure 1) of double acting structure, use a RE-GMM actuator J1, magnetostrictive rod 7 extends under the coil the action of a magnetic field, promoting piston 13 moves to right, the V2 chamber extrudes highly pressurised liquid, and the V1 chamber sucks low pressure liquid; When electromagnetic coil cuts off the power supply, magnetostrictive rod 7 withdrawals, spring 14 promotes piston 13 and moves to left, and the V1 chamber extrudes highly pressurised liquid, and the V2 chamber sucks low pressure liquid.Single actuator drives the double-action scheme, is driven by an actuator, and two-way pressure oil is seen Fig. 4.This pattern can obtain the effect of not losing flow.Single actuator drives the identical (see figure 1) of oil hydraulic pump of hydraulic pump structure with single actuator driving double acting structure of single-acting structure, compression square-cavity V2 extrudes liquid during the elongation of RE-GMM actuator, but V1 did not work in the chamber when spring 14 promotion pistons 13 moved to left, output flow is above-mentioned two kinds of schemes (Fig. 3, shown in Figure 4) half, sees Fig. 5.Owing to do not export fluid during length of spring compressed V1 chamber, output fluid pressure can obtain the effect of high-pressure liquid output by the decision of RE-GMM actuator.
Claims (5)
1, the oil hydraulic pump that directly drives of the actuator of making of rare earth ultra-magnetostriction material, include the oil hydraulic pump cylinder body, driven plunger (13) in the cylinder body, and Sealing (11), the oil hydraulic pump cylinder body is to be constituted by known technology by cylinder body front cover (8), rear end of the cylinder block lid (15) and cylinder body (12), the invention is characterized in, the oil hydraulic pump that the actuator of making of rare earth ultra-magnetostriction material directly drives is made up of actuator (J1) and oil hydraulic pump (J2) two-part, and the cylinder body front cover (8) of oil hydraulic pump is connected with known technology with the outer valve jacket (3) of actuator (J1); Actuator partly includes the outer valve jacket (3) of actuator (J1), the outer end cap (2) that is connected with outer valve jacket (3), be provided with in the actuator cavity, the magnetostrictive rod (7) that rare earth ultra-magnetostriction material is made, push rod (9) that magnetostrictive rod (7) two ends connect and the power transmission ball (10) that contacts with it, the concentrating flux sleeve (4) that is provided with near actuator (J1) cavity inner wall forms closed magnetic loop, the magnetic shield (6) that is provided with between concentrating flux sleeve (4) and the magnetostrictive rod (7), and be provided with in the cavity between closed magnetic loop and the magnetic shield (6), pressing known technology realizes being electrically connected with outside, the solenoid (5) that can lead to alternating current; The end movement of magnetostrictive rod (7) and ouput force are by push rod (9) and power transmission ball (10) driven plunger (13).
2, the oil hydraulic pump that directly drives with the actuator of rare earth ultra-magnetostriction material making according to claim 1, it is characterized in that, be embedded with the butterfly spring (14) that magnetostrictive rod (7) is applied precompression between rear end of the cylinder block lid (15) and driven plunger (13), actuator outer end cap (2) is provided with the bolt (1) of the adjusting precompression that connects by known technology.
3, the oil hydraulic pump that directly drives with the actuator of rare earth ultra-magnetostriction material making according to claim 1 and 2, it is characterized in that power transmission ball (10) is the conical surface with interior push rod (9) and contacted of oil hydraulic pump piston (13) end face that is provided with of actuator cavity.
4, the oil hydraulic pump that directly drives with the actuator of rare earth ultra-magnetostriction material making according to claim 1 and 2 is characterized in that, has adopted TbDyFe, i.e. the magnetostrictive rod (7) of Tb-Dy-Fe alloy bar material making; The magnetic isolation board (6) that has adopted teflon to make has adopted Ni50 material concentrating flux sleeve (4) and push rod (9).
5, the oil hydraulic pump that the actuator of making of rare earth ultra-magnetostriction material according to claim 1 and 2 directly drives, it is characterized in that, the cylinder body front cover (8) of actuator oil hydraulic pump is connected with known technology with the outer valve jacket (3) of actuator (J1), rear end cover (15) is with after the outer valve jacket (3) of actuator (J1 ') is connected with known technology, wherein actuator (J1) outer end cap (2) is provided with the bolt (1) of the adjusting precompression that connects by known technology, makes the synthetic dual actuator of each actuator group that is connected of oil hydraulic pump (J2) and its two ends drive the oil hydraulic pump of double acting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037378 CN1570381A (en) | 2004-04-30 | 2004-04-30 | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037378 CN1570381A (en) | 2004-04-30 | 2004-04-30 | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1570381A true CN1570381A (en) | 2005-01-26 |
Family
ID=34481644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410037378 Pending CN1570381A (en) | 2004-04-30 | 2004-04-30 | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1570381A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439476B (en) * | 2008-12-03 | 2010-04-07 | 苏州大学 | Clamping mechanism for chucking appliance system |
| CN103302886A (en) * | 2013-06-27 | 2013-09-18 | 苏州大学 | Micro-driving device and electromagnetic control driven micro-punch with same |
| CN104612942A (en) * | 2015-01-19 | 2015-05-13 | 南昌工程学院 | Miniature flow pump based on rare earth super-magnetostrictive material |
| CN110196123A (en) * | 2019-05-14 | 2019-09-03 | 安徽理工大学 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
| CN110962825A (en) * | 2019-11-19 | 2020-04-07 | 南京航空航天大学 | Disc type brake-by-wire system based on magnetostrictive material and control method thereof |
| CN111810469A (en) * | 2020-06-04 | 2020-10-23 | 南京航空航天大学 | Magnetostriction axial double-plunger pump driven electro-hydrostatic actuator and working method thereof |
-
2004
- 2004-04-30 CN CN 200410037378 patent/CN1570381A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439476B (en) * | 2008-12-03 | 2010-04-07 | 苏州大学 | Clamping mechanism for chucking appliance system |
| CN103302886A (en) * | 2013-06-27 | 2013-09-18 | 苏州大学 | Micro-driving device and electromagnetic control driven micro-punch with same |
| CN103302886B (en) * | 2013-06-27 | 2016-03-23 | 苏州大学 | The minitype stamping machines that micro-move device device and the Electromagnetic Control comprising this device drive |
| CN104612942A (en) * | 2015-01-19 | 2015-05-13 | 南昌工程学院 | Miniature flow pump based on rare earth super-magnetostrictive material |
| CN110196123A (en) * | 2019-05-14 | 2019-09-03 | 安徽理工大学 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
| CN110962825A (en) * | 2019-11-19 | 2020-04-07 | 南京航空航天大学 | Disc type brake-by-wire system based on magnetostrictive material and control method thereof |
| CN110962825B (en) * | 2019-11-19 | 2023-12-29 | 南京航空航天大学 | Disk type linear control braking system based on magnetostrictive material and control method thereof |
| CN111810469A (en) * | 2020-06-04 | 2020-10-23 | 南京航空航天大学 | Magnetostriction axial double-plunger pump driven electro-hydrostatic actuator and working method thereof |
| CN111810469B (en) * | 2020-06-04 | 2022-04-19 | 南京航空航天大学 | Magnetostriction axial double-plunger pump driven electro-hydrostatic actuator and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105003494B (en) | A kind of actuator | |
| KR910012555A (en) | Electro-hydraulic valve actuator | |
| US4804314A (en) | Magnetostrictive hydraulic injector | |
| CA2476032A1 (en) | Hydraulic drive system and method of operating a hydraulic drive system | |
| CN1313732C (en) | Piezo-electric compressor with displacement amplifier | |
| SE8704931L (en) | WATER PUMP DRIVEN FROM ELEMENTS OF A JETTAGMAGNOSTICTIVE MATERIAL | |
| JP2008536053A (en) | Fluid working machine | |
| CN1570381A (en) | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material | |
| US20040051066A1 (en) | Biased actuators and methods | |
| CN112178006A (en) | Automatic reversing hydraulic cylinder | |
| CN110043519A (en) | A kind of high efficiency electricity hydrostatic actuator that machinery internal resistance is continuously adjustable | |
| US4795318A (en) | Magnetostrictive pump | |
| CN104088778A (en) | Digital hydraulic pump based on Terfenol-D drive | |
| CN201875258U (en) | High-speed switch valve driven by actuator manufactured by rare-earth giant magnetostrictive material | |
| US6886331B2 (en) | Magnetohydraulic motor | |
| CN100464081C (en) | Automatically-reciprocating hydraulic cylinder | |
| CN2707998Y (en) | Actuator directly driven hydraulic pump made of rare earth super magnetostrictive material | |
| CN1621677A (en) | Fuel pump for an internal combustion engine | |
| CN108843639B (en) | Piezoelectric ceramic type jet pipe valve group | |
| CN101782089B (en) | Hydraulic oil cylinder with magnetic self-locking and magnetic auxiliary driving structure | |
| CN203670126U (en) | Magnetostriction type micropump | |
| EP0474720A1 (en) | Variable displacement pump. | |
| US20190264586A1 (en) | Multi-way valve as well as actuator comprising such a multi-way valve | |
| WO1999054626A1 (en) | Piezoceramic actuators and actuating system incorporating piezoceramic elements | |
| CN210600364U (en) | Liquid transfer stroke amplification type piezoelectric switch valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |